Newton's Principia, first book, sections I., II., III. : with notes and illustrations, and a collection of problems principally intended as examples of Newton's methods / Percival Frost. Principia. Liber I. Selections. English Newton, Isaac, 1642-1727. Frost, Percival, 1817-1898. Dynamics of a particle. Curves, Plane. QA803 .F7x 1878 531.3 NEN London : Macmillan, 1883. 1883. 1883 Text xv, 292 p. : eng eng lat